Answer:
0
Step-by-step explanation:
21(3) +2(7) - 11(7) because the absolute value of -11 is 11
63+14-77
=0
solution is (4, - 7 )
given the equations
y = 2x - 15 → (1)
4x + 3y = - 5 → (2)
substitute y = 2x - 15 into (2)
4x + 3(2x - 15) = - 5
4x + 6x - 45 = - 5
10x - 45 = - 5 ( add 45 to both sides )
10x = 40 ( divide both sides by 10 )
x = 4
substitute x = 4 into (1) for corresponding value of y
y = (2 × 4 ) - 15 = 8 - 15 = - 7
solution is (4, - 7 )
Answer:
Infinite: 2x+7=2+7
One solution= 2x-5= 10
No solution= 2x+7=2x-6
Step-by-step explanation:
Answer is Rachel worked 3 2/3 hours
Step by step
Dominic worked 2 3/4 hours
Rachel worked (1 1/3) times (2 3/4)
1 1/3 x 2 3/4. Change into an improper fraction
4/3 x 11/4. multiply across
44/12
Simplify
= 3 2/3
This is not a quiestion but the area of this shape is 401.92inches. A=2πrh+2πr2
